[A2A] Let us do some economics here. What do you have to lose by preparing for one year? It appears that you did not get a good job from your question. So, in any case you have to do something, why not prepare for GATE which opens up options for M.Tech. in IITs and jobs in PSUs?
Paresh Mathur's answer is really good: Paresh Mathur's answer to Is it the right decision to drop a year, after B.Tech, for the GATE exam. I'm really poor in basic concepts of CS, and I want to start afresh?